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Finding the Fourth Proportional to 21,353.88, 32,022.22 and 8,865.40

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Solution

The fourth proportional to 21,353.88, 32,022.22 and 8,865.40 is: 13,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.88 : 32,022.22 = 8,865.40 : x
  2. Step 2: Convert to fraction form
    21,353.88/32,022.22 = 8,865.40/x
  3. Step 3: Cross multiply
    21,353.88x = 32,022.22 × 8,865.40
  4. Step 4: Simplify right side
    21,353.88x = 283,889,789.19
  5. Step 5: Solve for x
    x = 283,889,789.19/21,353.88
  6. Step 6: Final answer
    x = 13,294.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.